VB.Net and XML

[viji]

hi,

i got an error "Illegal Character Path"
my code as follows

Imports System.IO
Imports System.Xml.Serialization
Public Class serializabledata
    Public Function save(ByVal filename As String)
        Dim tempFilename As String

        tempFilename = filename & "*.tmp"
        Dim tempFileInfo1 As FileInfo
        Try

            tempFileInfo1 = New FileInfo(tempFilename)---------------illegal character path
        Catch e As Exception
            MsgBox(e.Message)     ----------
        End Try

        'If tempFileInfo1.Exists = True Then
        '    tempFileInfo1.Delete()
        'End If

        Dim stream As FileStream
        Try
            stream = New FileStream(tempFilename, FileMode.Create)---error: illegal character path

        Catch e As Exception
            MsgBox(e.Message)
        End Try

        save(stream)
        stream.Close()
        tempFileInfo1.CopyTo(filename, True)
        tempFileInfo1.Delete()
    End Function

    Public Function save(ByVal stream As Stream)
        Dim serializer As New XmlSerializer(Me.GetType)
        serializer.Serialize(stream, Me)
    End Function

End Class